<!DOCTYPE HTML PUBLIC "-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//EN" "hmpro6.dtd">
<HTML> 
  <HEAD> 
	 <TITLE>dvbsnoop - A DVB Stream Analyzer Tool : IntroPage</TITLE>
	 <META NAME="Author" CONTENT="Rainer Scherg"> 
  </HEAD> 
  <BODY> 
	 <H1>dvbsnoop - A DVB Stream Analyzer Tool</H1> 
	 <H2> dvbsnoop Quicklinks</H2> 
	 <P><B><A
		HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A></B><BR>Get
		tarballs at: <A
		HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A><BR>Get
		the latest source at: <A
		HREF="https://github.com/OpenMipsel/tuxbox-cvs">https://github.com/OpenMipsel/tuxbox-cvs</A><BR>Get DVB drivers at:
		<A HREF="http://www.linuxtv.org">http://www.linuxtv.org</A><BR><BR><BR></P> 
	 <H2>What is dvbsnoop?</H2> 
	 <P>dvbsnoop is a DVB / MPEG stream analyzer program. <BR><BR>Its purpose is
		to debug, dump or view stream information (e.g. digital television broadcasts)
		send via satellite, cable or terrestrial. Streams can be SI, PES or transport
		streams. DSM-CC and MHP will follow...<BR>Basically you can describe dvbsnoop
		as a simple stream analyzing program, similar to TCP network sniffer programs
		like <I>snoop</I> on Sun Solaris or <I>tcpdump</I> under Linux.<BR><BR> The
		programm was mainly written to learn and understand the DVB protocol structures
		and streams sent via sattelites. Out of this reason, the programm ist not
		performance optimized, but it will hopefully do its job.<BR><BR>Rainer Scherg
		(rasc) </P> 
	 <P><BR></P> 
	 <H2>Under what Licence is dvbsnoop?</H2> 
	 <P>dvbsnoop is published under GPL:</P> 
	 <PRE>
License: 

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
</PRE> 
	 <P><BR></P> 
	 <H2>Is there any disclaimer?</H2> 
	 <P>Yes, the standard disclaimer for all non-commercial software (;-)):<BR>
		You may use this program freely, but on your own risk.<BR>There is no garantee,
		that this programm will fit your needs in any way. Also this program might not
		compile on your computer - and if so, it may crash your computer or even eat
		your cat.</P> 
	 <P>By the way: It is strictly forbidden to use this program for hacking
		encrypted TV channels.</P> 
	 <P><BR><BR><BR></P> 
	 <H2>Installation...</H2> 
	 <P>dvbsnoop is based on the <A HREF="http://www.linuxtv.org">linux dvb
		api</A>. You need the dvb driver installed on your computer to use dvbsnoop.
		dvbsnoop is text-based, so it should work on any unix based system, which
		offers shell access and dvb support installed.</P> 
	 <H3> Getting the Source</H3> 
	 <P>Download a tarball for dvbsnoop at:
		<A
		 HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A>.<BR>Unpack
		the tar archive using the '<I>gzip -d / bzip2 -d</I>...' and '<I>tar xvf
		...</I>' commands.</P> 
	 <P>Or get the latest source from the cvs at:
		<A HREF="https://github.com/OpenMipsel/tuxbox-cvs">https://github.com/OpenMipsel/tuxbox-cvs</A>:<BR><I>Please read
		the checkout information.<BR> dvbsnoop is part of the tuxbox/dbox2 project and
		located in the /apps/dvb directory.</I><BR></P> 
	 <H3> Cross Compiling for the dbox2 (ppc)</H3> 
	 <P>dvbsnoop is part of the dbox2 cdk. The dbox2 is a powerful digital
		satellite receiver (set top box) with a network interface.<BR> Just follow the
		installation instructions of the dbox2 cdk:</P> 
	 <TABLE CELLPADDING="10"> 
		<TR> 
		  <TD>&nbsp;</TD> 
		  <TD BGCOLOR="#c0c0c0"> 
			 <PRE>cd cdk
./autogen.sh
./configure
make .dvbsnoop
</PRE></TD> 
		</TR> 
	 </TABLE> 
	 <H3> Native Compilation (e.g. i386 linux)</H3> 
	 <P>Check out dvbsnoop from the cvs or download a tarball. If your
		distribution still uses Linux kernel 2.4, then you probably need to set the
		path to your DVB API header files by appending </P> 
	 <PRE>CPPFLAGS=-I/path/to/dvb-kernel/linux/include</PRE> 
	 <P>to the configure command.</P> 
	 <TABLE CELLPADDING="10"> 
		<TR> 
		  <TD>&nbsp;</TD> 
		  <TD BGCOLOR="#c0c0c0"> 
			 <PRE>cd dvbsnoop
./autogen.sh
./configure
make
</PRE></TD> 
		</TR> 
	 </TABLE> 
	 <P><B>Important:</B> Currently I'm working with a dbox2 only (I do not own
		a dvb card for my linux server) - so I do not know if dvbsnoop is working on a
		linux based PC smoothly.</P> 
	 <P><BR><BR><BR></P> 
	 <H2>How to use dvbsnoop?</H2> 
	 <P>dvbsnoop is a commandline tool.<BR>To tune in a transponder, use a
		proper tuning program like <I>dvbtune</I> (see:
		<A HREF="http://www.linuxtv.org">http://www.linuxtv.org</A>) or a GUI based DVB
		program like <I>Neutrino</I> or <I>Enigma</I> which is running on a dbox2 or on
		a Linux-PC (see: <A
		HREF="http://www.tuxbox.org">http://www.tuxbox.org</A>).</P> 
	 <H3>The Command Line</H3> 
	 <P><B>dvbsnoop&nbsp;&nbsp; [options] &nbsp;&nbsp;pid</B><BR><BR>pid can be
		any unsigned number within the legal pid number range.<BR>The PID can be
		specified in hex, octal or decimal version (using C-syntax -notation).<BR>e.g.:
		hex: 0x1A, octal: 0722 , decimal: 6932</P> 
	 <TABLE BGCOLOR="#e0e0e0" CELLPADDING="4"> 
		<TR BGCOLOR="#c0c0c0"> 
		  <TD><B>Options</B></TD> 
		  <TD>&nbsp;</TD> 
		  <TD><B>Description</B></TD> 
		  <TD><B>Default</B></TD> 
		</TR> 
		<TR> 
		  <TD></TD> 
		  <TD></TD> 
		  <TD></TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD>-demux device</TD> 
		  <TD></TD> 
		  <TD>demux device </TD> 
		  <TD>default device</TD> 
		</TR> 
		<TR> 
		  <TD>-dvr device</TD> 
		  <TD></TD> 
		  <TD>dvr device </TD> 
		  <TD ALIGN="LEFT">default device</TD> 
		</TR> 
		<TR> 
		  <TD>-frontend device</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>fe device</TD> 
		  <TD ALIGN="LEFT">default device</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><B>-s
			 [sec|ts|pes|<BR>&nbsp;&nbsp;pidscan|<BR>&nbsp;&nbsp;bandwidth|signal|feinfo]</B></TD>
		  
		  <TD></TD> 
		  <TD>snoop type <BR>&nbsp;sec = Sections,<BR>&nbsp; ts = Transport
			 Stream<BR>&nbsp;pes = Packetized Elementary Stream.,<BR>&nbsp;pidscan =
			 transponder PID scan<BR>&nbsp;bandwidth = pid data rate
			 statistics<BR>&nbsp;signal = frequency/transponder signal
			 statistics<BR>&nbsp;feinfo = show information and parameters of
			 frontend<BR></TD> 
		  <TD VALIGN="TOP">[-s sec]</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP">-f filter</TD> 
		  <TD></TD> 
		  <TD>filtervalue for '-s sec' demux<BR>max demux filter usage value in
			 "-s bandwidth"</TD> 
		  <TD> [-f 0]</TD> 
		</TR> 
		<TR> 
		  <TD> -m mask</TD> 
		  <TD></TD> 
		  <TD>maskvalue for 'sec' demux</TD> 
		  <TD> [-m 0]</TD> 
		</TR> 
		<TR> 
		  <TD>-crc</TD> 
		  <TD></TD> 
		  <TD>CRC check when reading 'sec'<BR>&nbsp; (depends on your driver
			 implementation)</TD> 
		  <TD> [-nocrc]</TD> 
		</TR> 
		<TR> 
		  <TD>-nocrc</TD> 
		  <TD></TD> 
		  <TD>No CRC check when reading 'sec' </TD> 
		  <TD>[-nocrc]</TD> 
		</TR> 
		<TR> 
		  <TD> -sync</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Simple packet header sync when reading 'ts' or 'pes'</TD> 
		  <TD> [-snyc]</TD> 
		</TR> 
		<TR> 
		  <TD> -nosync</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>No header sync when reading 'ts' or 'pes'</TD> 
		  <TD> [-snyc]</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP">-buffersize KB</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>demux buffersize in KBytes (sec, ts, pes)<BR>e.g. -buffersize 512
			 or -buffersize 1024<BR>0 = use dvbsnoop default buffersize for a snoop
			 type.<BR>(default buffersize is 256 KB)</TD> 
		  <TD>[-buffersize 0]</TD> 
		</TR> 
		<TR> 
		  <TD><B>-n count</B></TD> 
		  <TD></TD> 
		  <TD>receive count packets (0=no limit)</TD> 
		  <TD> [-n 0]</TD> 
		</TR> 
		<TR> 
		  <TD>-timeout ms</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Section read timeout in ms (0=no timeout)</TD> 
		  <TD>[-timeout 0]</TD> 
		</TR> 
		<TR> 
		  <TD>-spiderpid</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>follow up referenced PIDs (sections only). Sets "-n 1"</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD>-tssubdecode</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Subdecode PES or Section from TS packets</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP">-b</TD> 
		  <TD></TD> 
		  <TD><B>binary output </B>of packets (disables other output) ("stream"
			 output)</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD>-if</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>input file, reads from binary file instead of demux device</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"> -ph mode</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>print hex buffer, modes: <BR> &nbsp; 0=none, 1=hexdump, 2=hex line,
			 3=ascii line, 4=hexdump2</TD> 
		  <TD>[-ph 1]</TD> 
		</TR> 
		<TR> 
		  <TD><B>-nph</B></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>don't print hex dump (= -nohexdumpbuffer -ph 0)</TD> 
		  <TD></TD> 
		</TR> 
		<TR> 
		  <TD><B>-pd</B> verbose</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>print stream decode (verbose level 0..9)</TD> 
		  <TD> [-pd 7]</TD> 
		</TR> 
		<TR> 
		  <TD>-npd</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>don't print decoded stream (= -pd 0) </TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD>-hexdumpbuffer</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>print read data as hexdump prior to decoding</TD> 
		  <TD>[-hexdumpbuffer]</TD> 
		</TR> 
		<TR> 
		  <TD><B>-nohexdumpbuffer</B></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>suppress hexdump print of read buffer</TD> 
		  <TD>[-hexdumpbuffer]</TD> 
		</TR> 
		<TR> 
		  <TD>-t[n|d|f]</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>print timestamp (no, delta, full)</TD> 
		  <TD> [-tf] </TD> 
		</TR> 
		<TR> 
		  <TD>-hideproginfo</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>hide copyright and program info header at program start</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
		<TR> 
		  <TD>-help</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>usage information...</TD> 
		  <TD>&nbsp;</TD> 
		</TR> 
	 </TABLE> 
	 <P>(default values are in square brackets...), bold options are most
		used...</P> 
	 <P></P> 
	 <H3>Examples:</H3> 
	 <H4>dvbsnoop 0x10;&nbsp; dvbsnoop 020;&nbsp; dvbsnoop -crc 16</H4> 
	 <P>dump PID Hex 10 (sections mode). This command will dump the NIT
		transmission within the dvb data stream.<BR>To ensure data integrity on
		hardware/driver level, use the <I><B>-crc</B></I> option - otherwise you may
		get garbage data analyzed... (E.g.: Trying to decode a mpeg2 video stream PID
		as section, will fail with -crc switch on. With <I>-nocrc</I>) you may get odd
		results!) Also on DVB-T signal strength may vary and result in garbage
		sections....</P> 
	 <TABLE CELLPADDING="10"> 
		<TR> 
		  <TD BGCOLOR="#e0e0e0"> 
			 <PRE>~/bin &gt; ./dvbsnoop 0x10 | more
DvbSnoop   Vers. 1.0a   -- (c) Rainer Scherg

---------------------------------------------------------
SECT-Packet: 00000001   PID: 16 (0x0010), Length: 282 (0x011a)
Time received: Thu 16.10.2003  21:43:07.954
---------------------------------------------------------
  0000:   @  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 
  0000:  40 f1 17 00 01 e9 01 01 f0 00 f1 0a 04 ff 00 01 
  0010:   .  .  C  .  .  .  .  P  .  .  .  .  u  .  .  . 
  <B>[...]</B>
  0100:      .  .  .  S  .  .  .  .  C  .  .  %  D  u  . 
  0100:  20 00 04 04 53 00 01 f0 0d 43 0b 01 25 44 75 01 
  0110:   .  .  .     .  .  l  .  .  z 
  0110:  92 81 02 20 00 04 6c d5 b5 7a 

PID:  16 (0x0010)
NIT-decoding....
Table_ID: 64 (0x40)  [= network_information_section - actual network]
section_syntax_indicator: 1 (0x01)
reserved_1: 1 (0x01)
reserved_2: 3 (0x03)
Section_length: 279 (0x0117)
Network_ID: 1 (0x0001)  [= Astra Satellite Network 19.2E / Satellite / SES]
reserved_3: 3 (0x03)
Version_number: 20 (0x14)
Current_next_indicator: 1 (0x01)
Section_number: 1 (0x01)
Last_Section_number: 1 (0x01)
reserved_4: 15 (0x0f)
Network_descriptor_length: 0 (0x0000)

reserved_5: 15 (0x0f)
Transport_stream_loop_length: 266 (0x010a)
    
    Transport_stream_ID: 1279 (0x04ff)
    Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
    reserved_1: 15 (0x0f)
    Transport_descriptor_length: 13 (0x000d)
        
        DVB-DescriptorTag: 67 (0x43)  [= satellite_delivery_system_descriptor]
        Descriptor_length: 11 (0x000b)
        Frequency: 18453072 (=  11.99250 GHz)
        Orbital_position: 402 (=  19.2)
        West_East_flag: 1 (0x01)  [= EAST]
        Polarisation: 0 (0x00)  [= linear - horizontal]
        Modulation (Sat): 1 (0x01)  [= QPSK]
        Symbol_rate: 2576384 (=  27.5000)
        FEC_inner: 3 (0x03)  [= 3/4 conv. code rate]
        
    Transport_stream_ID: 1115 (0x045b)
    Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
    reserved_1: 15 (0x0f)
    Transport_descriptor_length: 13 (0x000d)
        
        DVB-DescriptorTag: 67 (0x43)  [= satellite_delivery_system_descriptor]
        Descriptor_length: 11 (0x000b)
        Frequency: 19292789 (=  12.66275 GHz)
        Orbital_position: 402 (=  19.2)
        West_East_flag: 1 (0x01)  [= EAST]
        Polarisation: 0 (0x00)  [= linear - horizontal]
        Modulation (Sat): 1 (0x01)  [= QPSK]
        Symbol_rate: 2228224 (=  22.0000)
        FEC_inner: 4 (0x04)  [= 5/6 conv. code rate]
        
    Transport_stream_ID: 1117 (0x045d)
    Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
    reserved_1: 15 (0x0f)
    Transport_descriptor_length: 13 (0x000d)
        
        DVB-DescriptorTag: 67 (0x43)  [= satellite_delivery_system_descriptor]
        Descriptor_length: 11 (0x000b)
        Frequency: 19304997 (=  12.69225 GHz)
        Orbital_position: 402 (=  19.2)
        West_East_flag: 1 (0x01)  [= EAST]
        Polarisation: 0 (0x00)  [= linear - horizontal]
        Modulation (Sat): 1 (0x01)  [= QPSK]
        Symbol_rate: 2228224 (=  22.0000)
        FEC_inner: 4 (0x04)  [= 5/6 conv. code rate]
        
    Transport_stream_ID: 1119 (0x045f)
    Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
    reserved_1: 15 (0x0f)
    Transport_descriptor_length: 13 (0x000d)
        
        DVB-DescriptorTag: 67 (0x43)  [= satellite_delivery_system_descriptor]
        Descriptor_length: 11 (0x000b)
        Frequency: 19341685 (=  12.72175 GHz)
        Orbital_position: 402 (=  19.2)
        West_East_flag: 1 (0x01)  [= EAST]
</PRE><B>[...]</B></TD> 
		</TR> 
	 </TABLE> 
	 <P></P> 
	 <H4>dvbsnoop -n 10 -crc -td -f 0x50 -m 0xff -nph -pd 3 0x12</H4> 
	 <P>dump 10 packets of PID 0x12 (EIT, ...) in sections mode, using the fpid
		filter 0x50 and pid mask 0xff.<BR>-nph and -pd 3 tells dvbsnoop not to print a
		hexdump and restrict output to print decoded streams at verbose level 3.
		Timestamps should be printed in 'delta'-mode... Also check crc, to ensure
		packets are vaild! (invalid packets will not be displayed - this is driver
		dependent..)</P> 
	 <TABLE CELLPADDING="10"> 
		<TR> 
		  <TD BGCOLOR="#e0e0e0"> 
			 <PRE>~/bin &gt; ./dvbsnoop -n 10 -td -f 0x50 -m 0xff -nph -pd 3 0x12
DvbSnoop   Vers. 1.0a   -- (c) Rainer Scherg

---------------------------------------------------------
SECT-Packet: 00000001   PID: 18 (0x0012), Length: 528 (0x0210)
Time (delta) received: 0.068 (sec)
---------------------------------------------------------
PID:  18 (0x0012)
EIT-decoding....
Table_ID: 80 (0x50)  [= event_information_section - actual transport stream, schedule]
section_syntax_indicator: 1 (0x01)
Service_ID: 12003 (0x2ee3)  [=  --&gt; refers to PMS program_number]
Version_number: 6 (0x06)
Current_next_indicator: 1 (0x01)
Section_number: 112 (0x70)
Last_Section_number: 176 (0xb0)
Transport_stream_ID: 1089 (0x0441)
Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
Segment_last_Section_number: 112 (0x70)
Last_table_id: 80 (0x50)  [= event_information_section - actual transport stream, schedule]
    
    Event_ID: 674 (0x02a2)
    Start_time: 0xcec0181500 (=2003-10-16 18:15:00 [UTC])
    Duration: 0x0010000 (= 01:00:00 [UTC])
    Running_status: 0 (0x00)  [= undefined]
    Free_CA_mode: 0 (0x00)  [= unscrambled]
    
    Event_ID: 675 (0x02a3)
    Start_time: 0xcec0191500 (=2003-10-16 19:15:00 [UTC])
    Duration: 0x0010000 (= 01:00:00 [UTC])
    Running_status: 0 (0x00)  [= undefined]
    Free_CA_mode: 0 (0x00)  [= unscrambled]
    
    Event_ID: 676 (0x02a4)
    Start_time: 0xcec0201500 (=2003-10-16 20:15:00 [UTC])
    Duration: 0x0010000 (= 01:00:00 [UTC])
    Running_status: 0 (0x00)  [= undefined]
    Free_CA_mode: 0 (0x00)  [= unscrambled]
==========================================================


---------------------------------------------------------
SECT-Packet: 00000002   PID: 18 (0x0012), Length: 774 (0x0306)
Time (delta) received: 0.048 (sec)
---------------------------------------------------------
PID:  18 (0x0012)
EIT-decoding....
Table_ID: 80 (0x50)  [= event_information_section - actual transport stream, schedule]
section_syntax_indicator: 1 (0x01)
Service_ID: 12040 (0x2f08)  [=  --&gt; refers to PMS program_number]
Version_number: 6 (0x06)
Current_next_indicator: 1 (0x01)
</PRE><B>[...]</B></TD> 
		</TR> 
	 </TABLE> 
	 <P></P> 
	 <H4>dvbsnoop -n 1 -nph -crc 0x12</H4> 
	 <TABLE CELLPADDING="10"> 
		<TR> 
		  <TD BGCOLOR="#e0e0e0"> 
			 <PRE>~/bin &gt; ./dvbsnoop -n 1 -nph 0x12
dvbsnoop  Vers. 1.1.7   -- https://github.com/OpenVisionE2/dvbsnoop 

---------------------------------------------------------
SECT-Packet: 00000001   PID: 18 (0x0012), Length: 185 (0x00b9)
Time received: Tue 2003-11-11  00:02:22.485
---------------------------------------------------------
PID:  18 (0x0012)
EIT-decoding....
Table_ID: 79 (0x4f)  [= event_information_section - other transport stream, present/following]
section_syntax_indicator: 1 (0x01)
reserved_1: 1 (0x01)
reserved_2: 3 (0x03)
Section_length: 182 (0x00b6)
Service_ID: 28206 (0x6e2e)  [=  --&gt; refers to PMS program_number]
reserved_3: 3 (0x03)
Version_number: 15 (0x0f)
Current_next_indicator: 1 (0x01)
Section_number: 1 (0x01)
Last_Section_number: 1 (0x01)
Transport_stream_ID: 1073 (0x0431)
Original_network_ID: 1 (0x0001)  [= Astra Satellite Network 19,2&deg;E | Soci&eacute;t&eacute; Europ&eacute;enne des Satellites]
Segment_last_Section_number: 1 (0x01)
Last_table_id: 79 (0x4f)  [= event_information_section - other transport stream, present/following]
    
    Event_ID: 25605 (0x6405)
    Start_time: 0xceda010500 (=2003-11-11 01:05:00 [UTC])
    Duration: 0x0003000 (= 00:30:00 [UTC])
    Running_status: 1 (0x01)  [= not running]
    Free_CA_mode: 0 (0x00)  [= unscrambled]
    Descriptors_loop_length: 155 (0x9b)
        
        DVB-DescriptorTag: 77 (0x4d)  [= short_event_descriptor]
        Descriptor_length: 16 (0x10)
          ISO639_2_language_code:  deu
        Event_name_length: 11 (0x0b)
        Event_name: "Abendschau"  -- Charset: Latin alphabet no. 5
        Text_length: 0 (0x00)
        Text: ""
        
        DVB-DescriptorTag: 80 (0x50)  [= component_descriptor]
        Descriptor_length: 6 (0x06)
        reserved_1: 15 (0x0f)
        Stream_content: 1 (0x01)
        Component_type: 1 (0x01)
           == Content&amp;Component: (= video, 4:3  aspect ratio, 25 Hz)
        Component_tag: 1 (0x01)
        ISO639_2_language_code:  deu
        Component-Description: ""
        
        DVB-DescriptorTag: 80 (0x50)  [= component_descriptor]
        Descriptor_length: 6 (0x06)
        reserved_1: 15 (0x0f)
        Stream_content: 2 (0x02)
        Component_type: 3 (0x03)
           == Content&amp;Component: (= audio, stereo (2 channels))
        Component_tag: 2 (0x02)
        ISO639_2_language_code:  deu
        Component-Description: ""
        
        DVB-DescriptorTag: 84 (0x54)  [= content_descriptor]
        Descriptor_length: 6 (0x06)
            Content_nibble_level_1: 2 (0x02)
            Content_nibble_level_2: 0 (0x00)
               [= news/current affairs (general)]
            User_nibble_1: 0 (0x00)
            User_nibble_2: 0 (0x00)
            
            Content_nibble_level_1: 8 (0x08)
            Content_nibble_level_2: 0 (0x00)
               [= social/political issues/economics (general)]
            User_nibble_1: 0 (0x00)
            User_nibble_2: 0 (0x00)
            
            Content_nibble_level_1: 11 (0x0b)
            Content_nibble_level_2: 15 (0x0f)
               [= user defined]
            User_nibble_1: 2 (0x02)
            User_nibble_2: 0 (0x00)
            
            
        DVB-DescriptorTag: 78 (0x4e)  [= extended_event_descriptor]
        Descriptor_length: 85 (0x55)
        Descriptor_number: 0 (0x00)
        Last_descriptor_number: 0 (0x00)
        ISO639_2_language_code:  deu
        Length_of_items: 0 (0x00)
            
        Text_length: 79 (0x4f)
        Text: "* Sondersitzung Abgeordnetenhauses&lt;br&gt;* Untreue im Amt&lt;br&gt;* S-Bahnhof Kolonnenstra&szlig;e"  -- Charset: Latin alphabet no. 5
        
        DVB-DescriptorTag: 105 (0x69)  [= PDC_descriptor]
        Descriptor_length: 3 (0x03)
        reserved_1: 15 (0x0f)
        Programme_identification_label: 0x5d805 [= month=11  day=11   hour=0  min=5]
        
        DVB-DescriptorTag: 95 (0x5f)  [= private_data_specifier_descriptor]
        Descriptor_length: 4 (0x04)
        PrivateDataSpecifier: 5 (0x00000005)  [= ARD, ZDF, ORF]
        
        DVB-DescriptorTag: 130 (0x82)  [= User defined]
        Descriptor_length: 13 (0x0d)
        Descriptor-Data:
          0000:   0  0  :  0  5  1  1  .  1  1  #  0  0 
          0000:  30 30 3a 30 35 31 31 2e 31 31 23 30 30 
CRC: 3952000829 (0xeb8ebf3d)
==========================================================

</PRE> </TD> 
		</TR> 
	 </TABLE> 
	 <P></P> 
	 <H4>dvbsnoop -n 200 -s ts -b 0x00 &gt; ts-stream.pid0x00.file</H4> 
	 <P>Dump 200 packets of PID 0x00 in transport stream mode to an image
		file.<BR>The raw datastream will be dumped in the specified stream mode (PES,
		SECTION or TS).<BR>This file can be used, to postprocess the dvb data
		streams.</P> 
	 <H4>dvbsnoop -if ts-stream.pid0x00.file &nbsp; -s ts</H4> 
	 <H4>dvbsnoop -if ts-stream.pid0x00.file &nbsp; -s ts &nbsp;0x00</H4> 
	 <P>Read a data stream from file and analyze the stream.<BR>It is important
		that you specify mode (si, pes, ts) and optional the pid !</P> 
	 <P></P> 
	 <H4>dvbsnoop -pd 3 -s pidscan</H4> 
	 <H4>dvbsnoop -pd 9 -f 24 -s pidscan</H4> 
	 <P>Scan tuned transponder for PIDs. <BR>This mode tries to reveal all pids
		transmitted on a transponder, even pids which are not present in PAT, PMT,
		etc.<BR><BR>This scan may take 1-3 minutes, depending on how many demux filters
		dvbsnoop is using. By default dvbsnoop tries to get all demux filters it can
		allocate! On some dvb cards this can result in <I>strange</I> behavior. To
		avoid this you can use the "-f"-option to set maximum filter usage by dvbsnoop
		(less filters takes more time to complete the scan).<BR><BR>A good practice
		would be to check how many dmx filters dvbsnoop can allocate on your dvb card
		(-pd 9 option) and then lower this number by at least 4 filters (using -f
		option).<BR><BR>Remark: The PID-SCAN snoop will only detect pids, which are
		transmitted during the scan phase. Pids with a low repetition rate or pids
		grabbed by other applications may not be detected.</P> 
	 <P></P> 
	 <H4>dvbsnoop -pd 2 -n 1000 -s bandwidth</H4> 
	 <P>Analyze bandwidth usage of a PID.<BR>In this example, stop if more than
		1000 packets are read. for different output information, you can tweak the -pd
		option.</P> 
	 <P></P> 
	 <H4>dvbsnoop -pd 2 -n 100 -s signal</H4> 
	 <P>Show signal strength statistics of tuned
		frequency/transponder.<BR>Statistics will show signal strength, bit error rate,
		signal-noise ratio, uncorrected blocks ans frontend status...</P> 
	 <P><BR><BR><BR></P> 
	 <H2>Pitfalls...</H2> 
	 <UL> 
		<LI><B>dvbsnoop tries to decode every data it gets....</B><BR>E.g. if you
		  try to decode a video or audio stream in section mode - dvbsnoop may assume a
		  section table and will decode wrong data. In this case the decoding will be
		  garbage! Using the '<B>-crc</B>' option should prevent this (if supported at
		  hardware/driver level). Also the '-sync' option is very helpful, when using '-s
		  pes' or '-s ts'. The '<B>-sync</B>' option tries to find TS or PES packet start
		  sync bytes before decoding...<BR><BR></LI> 
		<LI><B>dvbsnoop doesn't do DVB stream validation....</B><BR>dvbsnoop
		  assumes correct dvb streams. Getting garbage, corrupted streams or streams with
		  wrong semantics (e.g. incorrect length information) will result in wrong
		  decoding output. Because od this, the usage of the options <B>'-crc</B>' and
		  '<B>-sync</B>' is strongly recommended!!<BR><BR></LI> 
		<LI><B>Bugs and wrong decoding:</B><BR>If you see any odd output,
		  <B>please report</B> this.<BR>Wrong decoding can be mostly avoided, using the
		  options <B>'-crc</B>' and '<B>-sync</B>'.</LI> 
	 </UL> 
	 <P><BR><BR><BR></P> 
	 <H2>Related Topic and Links</H2> 
	 <P>Please visit the following websites for more information:</P> 
	 <TABLE> 
		<TR> 
		  <TD VALIGN="TOP"><B><A
			 HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A></B>
			 </TD> 
		  <TD>&nbsp;</TD> 
		  <TD>This page, dvbsnoop homepage.</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><B><A
			 HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A></B></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD>The project homepage of dvbsnoop, currently the dvbsnoop cvs is
			 hosted at <B>www.tuxbox.org</B>. To check out the source, read the cvs
			 information on tuxbox.org. <B>Tarballs will be published on this site.</B></TD>
		  
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.tuxbox.org">http://www.tuxbox.org</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Website for linux on a <B><I>dbox2</I></B> (a set top box mainly
			 sold/"provided" in Europe).<BR> Here you will also find a support forum for
			 linux@dbox2.</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><B><A
			 HREF="https://github.com/OpenMipsel/tuxbox-cvs">github.com/OpenMipsel/tuxbox-cvs</A></B><BR><A
			 HREF="https://github.com/OpenMipsel/tuxbox-cvscgi-bin/viewcvs.cgi/tuxbox/apps/dvb/dvbsnoop/">https://github.com/OpenMipsel/tuxbox-cvscgi-bin/viewcvs.cgi/tuxbox/apps/dvb/dvbsnoop/</A></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD VALIGN="TOP">The CVS for linux@dbox2. dvbsnoop is part of the
			 linux@dbox2 project applications...</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://tuxbox.berlios.de">http://tuxbox.berlios.de</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>The old dbox2@linux homepage.<BR>For more links on this topic, have
			 a look on the <A HREF="http://tuxbox.org/forum/">FAQ-Section of the
			 forum</A>!</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><B><A
			 HREF="http://www.linuxtv.org">http://www.linuxtv.org</A></B></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Linux based TV, <B>the mother of all Linux based DVB related
			 stuff!</B>!! To get drivers or docs about the DVB-API, this will be your first
			 choice!</TD> 
		</TR> 
		<TR> 
		  <TD><A HREF="http://www.dvb.org">http://www.dvb.org</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Information about DVB</TD> 
		</TR> 
		<TR> 
		  <TD><A HREF="http://www.mhp.org">http://www.mhp.org</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Information about MHP</TD> 
		</TR> 
		<TR> 
		  <TD><A HREF="http://www.etsi.org">http://www.etsi.org</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Standards documents: e.g. EN 300 468</TD> 
		</TR> 
		<TR> 
		  <TD><A HREF="http://www.iso.ch">http://www.iso.ch</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>Standards documents: e.g. ISO/IEC 13818-1, ISO/IEC 13818-6</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP">irc:#dbox2</TD> 
		  <TD>&nbsp;</TD> 
		  <TD>IRC Support channel for dbox2. (use e.g. IRC server
			 irc.freenet.de:6667)</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.linuxstb.org/">http://www.linuxstb.org/</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>another very good site, with a punch of good tools!</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.magicality.org/code/dvbdata/">http://www.magicality.org/code/dvbdata/</A></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD>A tool for saving data from the Data Carousell. (from Richard
			 Palmer )</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="https://www.linuxtv.org/wiki/index.php/Dvbsak">https://www.linuxtv.org/wiki/index.php/Dvbsak</A></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD>dvbsak is a general-purpose Digital Video Broadcasting library with
			 tools. </TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://ardmore.net/~thepaces/vk_tools/">http://ardmore.net/~thepaces/vk_tools/</A></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD>MPEG analyzing tool</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.linuxdvb.tv/">http://www.linuxdvb.tv/</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>... just have a look</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.dbox2.info">http://www.dbox2.info</A></TD> 
		  <TD>&nbsp;</TD> 
		  <TD>a portal site about the dbox2 set top box.</TD> 
		</TR> 
		<TR> 
		  <TD VALIGN="TOP"><A
			 HREF="http://www.cadsoft.de/people/kls/vdr/">http://www.cadsoft.de/people/kls/vdr/</A></TD>
		  
		  <TD>&nbsp;</TD> 
		  <TD>... not directly related with dvbsnoop, but mui mucho cool! a DVB
			 personal video recorder running on Unix... </TD> 
		</TR> 
	 </TABLE> 
	 <P><B>Remark:</B><BR>In 2003 the development <B>CVS has been moved</B> from
		cvs.berlios.de (German sourceforge clone) to <B><A
		HREF="https://github.com/OpenMipsel/tuxbox-cvs">github.com/OpenMipsel/tuxbox-cvs</A></B>! This was necessary due to
		uptime problems at <A HREF="http://www.berlios.de">berlios.de</A>.</P> 
	 <P><BR><BR></P> 
	 <H2>Authors, Co-Authors, Thanks, ...</H2> 
	 <TABLE> 
		<TR> 
		  <TD COLSPAN="3"><B>Authors are:</B></TD> 
		</TR> 
		<TR> 
		  <TD>&nbsp;Rainer Scherg &nbsp;</TD> 
		  <TD>&nbsp;(rasc)&nbsp; </TD> 
		  <TD>&nbsp;&lt;rasc@users.sourceforge.net&gt;</TD> 
		</TR> 
		<TR> 
		  <TD>&nbsp;Andreas Oberritter &nbsp;</TD> 
		  <TD>&nbsp;(obi)&nbsp;</TD> 
		  <TD>&nbsp;&lt;obi@saftware.de&gt;&nbsp;</TD> 
		</TR> 
	 </TABLE> 
	 <P><B>Thanks</B> a lot to all the members and developers of the
		tuxbox@dbox2 project!!!<BR>These heros ;-) do great support and also bugfixing
		- see also the history information in the source!!<BR><BR></P> 
	 <P><BR><BR></P> 
	 <H2>Where to send bugreports, requests?</H2> 
	 <P>If you find a bug or odd behavior of dvbsnoop, please save the stream to
		a binary file using option '-b ... &gt; file'. This way I could do a
		post-analyze.<BR><BR>Please send bugreports with a detailed description to:
		&nbsp;&nbsp;
		<A
		 HREF="mailto:info@openvision.tech - Bugreport...">info@openvision.tech</A><BR>Do
		NOT send saved stream files or large files without permission via
		email!<BR>Bugfixes, code snipsets, etc. are welcome</P> 
	 <P><BR><BR></P> 
	 <H2>Some keywords related to dvbsnoop...</H2> 
	 <P>DVB stream analyzer, mpeg stream analyzer, ts stream analyzer, MPEG,
		MPG, descriptor, digital television, satellite TV, cable TV, dvb-c, dvb-s,
		dvb-t, MHP, DSM-CC, SI, PES, TOT, PAT, PMT, SDT, EIT, NIT, TDST, RST, SIT, DIT,
		BAT, EMM, ECM, SI Tables, SSU, INT, UNT, AIT, datagram, sections, transport
		stream analyzer, packet elementary stream, DEMUX, ISO/IEC 13818-1, ISO/IEC
		13818-6, ETSI EN 300468, ETSI EN 301162, ETSI TS 102006, ETSI EN 301192, ETSI
		TR 101202, ITU H.222.0, data carousel, object carousel, dvb snoop, sniff,
		analyze, analyse, analyser, mpeg2, IOR, BIOP, TS, PES </P> 
	 <P><BR><BR><BR><BR><B><A
		HREF="https://github.com/OpenVisionE2/dvbsnoop">https://github.com/OpenVisionE2/dvbsnoop</A></B><BR>(<A
		HREF="keywords.html">c</A>) 2001-2004 Rainer Scherg (rasc)<BR><BR></P> </BODY>
</HTML>
